Guarantee – A free replacement ex-works if any closer proved defective by reason either of faulty manufacture or defect in materials.

Function

Closing Force Adjustment

The position indicated by figure ‘A’ is the standard postion of the eccentric shoe. By turning the show 180° the position shown in figure ‘B’, the door closing force increases about 25% just before the door closes (during last 10°).

Closing Speed Adjustment

Latching Angle Adjustment

Spring Power Adjustment

Turn the spring adjusting screw clockwise the required number of turns to match the door width as indicated in the chart. Where strong draft resistance exists increase the spring power as needed.

Latching Function (standard)

This function increases the door closing speed in the last 0 – 2° before the fully closed position, ensuring quick and complete door closure. This function is most useful with an airtight door or with a door with a tight latch.

The latch angle is factory set at 0°, turn the link counter-clockwise about 4 turns (this extends the link) and a latch angle of 2° is obtained.

Back-check Function (optional)

If a gust of wind or other strong force hits the door in the opening direction, it can damage the wall or cause injury to people.

The back-check function works within the door opening range 70° – 85° to 180°. The back-check power can be adjusted with the back-check valve.

Delayed Door Closing Function (optional)

This function holds the door open temporarily and resumes its regular closing sequence after the delayed closing area. It facilitates passage with a wheelchair or stretcher etc…

The delayed door closing action takes effect all the way from 180° – 85°. door opening.

The closing area can be adjusted with the delay closing valve. The maximum closing time from 180° opening to 85° is 90sec. when the delay valve is fully screwed in.